Earphone



FIG. 1 is a perspective view of an earphone;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a left side elevation view thereof.

The broken lines shown in the drawings illustrate portions of the earphone that form no part of the claimed design. 

CLAIM The ornamental design for an earphone, as shown and described. 